Pen



FIG. 1 is a front perspective view of a pen showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof, with the right side elevation view being a mirror image of the left side elevation view;

FIG. 5 is an enlarged top plan view thereof;

FIG. 6 is an enlarged bottom plan view thereof;

FIG. 7 is a lower front perspective view of the pen shown in FIG. 1, shown without the cap for the convenience of illustration;

FIG. 8 is a front elevation view thereof, with the rear, right side, and left side elevation views being a mirror image of the front elevation view;

FIG. 9 is an enlarged top plan view thereof; and,

FIG. 10 is an enlarged bottom plan view thereof.

The broken lines shown in FIGS. 5, 6, 7, and 10 illustrate environmental subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a pen, as shown and described. 